eZ Platform Admin UI vulnerable to DOM-based Cross-site Scripting in file upload widget

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

4.8 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N · score source

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Impact The file upload widget is vulnerable to XSS payloads in filenames. Access permission to upload files is required. As such, in most cases only authenticated editors and administrators will have the required permission. It is not persistent, i.e. the payload is only executed during the upload. In effect, an attacker will have to trick an editor/administrator into uploading a strangely named file. The fix ensures XSS is escaped. Patches See "Patched versions". Commit: https://github.com/ezsystems/ezplatform-admin-ui/commit/7a9f991b200fa5a03d49cd07f50577c8bc90a30b Workarounds None. References - https://developers.ibexa.co/security-advisories/ibexa-sa-2024-004-dom-based-xss-in-file-upload - https://github.com/ezsystems/ezplatform-admin-ui/commit/7a9f991b200fa5a03d49cd07f50577c8bc90a30b - https://github.com/ibexa/admin-ui/security/advisories/GHSA-qm44-wjm2-pr59 Credit This vulnerability was discovered and reported to Ibexa by Alec Romano: https://github.com/4rdr We thank them for…

Published by the source

31 Jul 2024, 17:01 UTC

Last modified by the source

2 Aug 2024, 02:46 UTC

Source last checked

26 Oct 2026, 14:25 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-gc5h-6jx9-q2qh

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# Patch Next advisory brief: GHSA-gc5h-6jx9-q2qh

Advisory: eZ Platform Admin UI vulnerable to DOM-based Cross-site Scripting in file upload widget
IDs: GHSA-gc5h-6jx9-q2qh
Record: https://patchnext.com/advisories/ghsa-gc5h-6jx9-q2qh (revision 1, source checked 26 Oct 2026, 14:25 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: ezsystems/ezplatform-admin-ui 3.3.39. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist ezsystems/ezplatform-admin-ui: affected >= 3.3.0, < 3.3.39; fixed in 3.3.39

## Suggested inspection (read-only)
- Packagist ezsystems/ezplatform-admin-ui: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on ezsystems/ezplatform-admin-ui.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-gc5h-6jx9-q2qh (GitHub-reviewed advisory GHSA-gc5h-6jx9-q2qh lists affected ranges: Packagist ezsystems/ezplatform-admin-ui >=3.3.0 <3.3.39)

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